Description:
Gypsum (Calcium Sulphate Dihydrate) is a naturally occurring mineral. In the Japanese Pharmacopoeia (JP), it is defined as the dihydrate form of calcium sulphate, commonly used for medicinal purposes, as a laxative, and for plaster and dental applications.
Chemical Name:
Calcium Sulphate Dihydrate
Calcium Sulfate Dihydrate (CaSO„·2HO)
Molecular Formula:
CaSO„·2HO
Appearance:
White, odorless powder or fine granules with a chalky texture.
Solubility:
Slightly soluble in water (about 0.2 g/100 mL at 25C).
Insoluble in alcohol and other organic solvents.
Melting Point:
>1450C (decomposes at higher temperatures to form Calcium Oxide).
Identification:
Aqueous Solution Test: Forms a clear, colorless solution when dissolved in dilute hydrochloric acid.
X-ray Diffraction: Matches the pattern of calcium sulfate dihydrate.
Application:
Laxative: Used in traditional medicine as a mild laxative for constipation.
Dental Applications: Used in making molds for dental impressions and gypsum products for prosthetic dentistry.
Plaster of Paris: Used in orthopedic casts, molds, and in construction materials.
Agricultural Use: As a soil amendment to improve soil texture and nutrient balance.
Industrial Use: Used in manufacturing cement, gypsum boards, and other construction materials.
Pharmacopoeial Compliance:
JP Standard: Complies with the Japanese Pharmacopoeia (JP) specifications, ensuring the product is free from harmful substances and contaminants.
Packing:
Available in various packaging sizes to meet commercial and industrial needs, often in moisture-resistant packaging to prevent degradation.
Shelf Life:
Typically has a long shelf life when stored in a cool, dry place.
Precautions:
Use in accordance with the JP guidelines to ensure proper safety and efficacy.
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